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參數(shù)資料
| 型號： | CS8190EDWFR20 |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DRVR AIRCORE TACH/SPD 20SOIC |
| 產(chǎn)品變化通告： | Product Discontinuation 20/Aug/2008 |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 驅(qū)動(dòng)器 |
| 應(yīng)用： | 自動(dòng) |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | CS8190EDWFR20OS |
CS8190
http://onsemi.com
7
Figure 7. Partial Schematic of Input and Charge Pump
VREG
FREQIN
SQOUT
R3
2.0 V
QSQUARE
CCP
R4
VC(t)
CP+
Q1
Q2
Q3
0.25 V
2.0 V
CP
RT
C4
F/VOUT
F to V
+
+
+
Figure 8. Timing Diagram of FREQIN and ICP
VREG
FREQIN
SQOUT
0
ICP+
tCHG
T
VCP+
0
VCC
tDCHG
Ripple voltage on the F/V output causes pointer or needle
flutter especially at low input frequencies.
The response time of the F/V is determined by the time
constant formed by RT and C4. Increasing the value of C4
will reduce the ripple on the F/V output but will also increase
the response time. An increase in response time causes a
very slow meter movement and may be unacceptable for
many applications.
The CS8190 has an undervoltage detect circuit that disables
the input comparator when VCC falls below 8.0 V(typical).
With no input signal the F/V output voltage decreases and the
needle moves towards zero. A second undervoltage detect
circuit at 6.0 V(typical) causes the function generator to
generate a differential SIN drive voltage of zero volts and the
differential COS drive voltage to go as high as possible. This
combination of voltages (Figure 2) across the meter coil
moves the needle to the 0
° position. Connecting a large
capacitor(> 2000
increases the time between these undervoltage points since
the capacitor discharges slowly and ensures that the needle
moves towards 0
° as opposed to 360°. The exact value of the
capacitor depends on the response time of the system,the
maximum meter deflection and the current consumption of
the circuit. It should be selected by breadboarding the design
in the lab.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS8190EDWFR20G | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Air Core Tach Driver w/Return To Zero RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| CS8190ENF16 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Air Core Tach Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| CS8190ENF16G | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 ANA AIRCORE TACH/ SPEED RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| CS-8190N16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tachometer Circuit |
| CS8191 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Precision Air-Core Tach/Speedo Driver |
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